<template>
  <div>
    <div style="margin: 10px 0">
      <el-input style="width: 200px" placeholder="请输入名称" suffix-icon="el-icon-search"
                v-model="username" @keyup.enter.native="load"></el-input>
      <el-input style="width: 200px" placeholder="请输入邮箱" suffix-icon="el-icon-message" class="ml-5"
                v-model="email" @keyup.enter.native="load"></el-input>
      <el-input style="width: 200px" placeholder="请输入地址" suffix-icon="el-icon-position" class="ml-5"
                v-model="address" @keyup.enter.native="load"></el-input>
      <el-button class="ml-5" type="primary" @click="load">搜索</el-button>
      <el-button class="ml-5" type="warning" @click="reset">重置</el-button>
    </div>

    <div style="margin: 10px 0">
      <el-button type="primary" @click="handleAdd">新增 <i class="el-icon-circle-plus-outline"></i></el-button>
      <el-popconfirm
          class="ml-5"
          confirm-button-text='确定'
          cancel-button-text='我再想想'
          icon="el-icon-info"
          icon-color="red"
          title="确定要批量删除吗？"
          @confirm="delBatch"
      >
        <el-button type="danger" slot="reference">批量删除 <i class="el-icon-remove-outline"></i></el-button>
      </el-popconfirm>
      <el-upload
          :action="'http://' + serverIp + ':9090/user/import'"
          :show-file-list="false"
          accept="xlsx"
          :on-success="handleExcelImportSuccess"
          :on-error="handleExcelImportError"
          style="display: inline-block">
        <el-button type="primary" class="ml-5">导入 <i class="el-icon-bottom"></i></el-button>
      </el-upload>
      <el-button type="primary" @click="exp" class="ml-5">导出 <i class="el-icon-top"></i></el-button>
    </div>

    <el-table
        :data="tableData"
        border
        stripe
        :header-cell-class-name="headerBg"
        @selection-change="handleSelectChange">
      <el-table-column type="selection" width="55"></el-table-column>
      <el-table-column prop="id" label="ID" width="80"></el-table-column>
      <el-table-column prop="username" label="用户名" width="140"></el-table-column>
      <el-table-column prop="role" label="角色">
        <template slot-scope="scope">
          <el-tag type="warning" v-if="scope.row.roleId === 1">管理员</el-tag>
          <el-tag type="primary" v-if="scope.row.roleId === 2">学生</el-tag>
          <el-tag type="success" v-if="scope.row.roleId === 3">老师</el-tag>
        </template>
      </el-table-column>
      <el-table-column prop="nickname" label="昵称" width="120"></el-table-column>
      <el-table-column prop="email" label="邮箱"></el-table-column>
      <el-table-column prop="phone" label="电话"></el-table-column>
      <el-table-column prop="address" label="地址"></el-table-column>
      <el-table-column label="操作" width="260" align="center">
        <template slot-scope="scope">
          <el-button type="primary" @click="showTeacherCourses(scope.row.teacherCourses)" v-if="scope.row.roleId === 3">课程 <i class="el-icon-notebook-2"></i></el-button>
          <el-button type="warning" @click="showStudentCourses(scope.row.studentCourses)" v-if="scope.row.roleId === 2">课程 <i class="el-icon-notebook-2"></i></el-button>
          <el-button type="success" @click="handleEdit(scope.row)">编辑 <i class="el-icon-edit"></i></el-button>
          <el-popconfirm
              class="ml-5"
              confirm-button-text='确定'
              cancel-button-text='我再想想'
              icon="el-icon-info"
              icon-color="red"
              title="确定要删除吗"
              @confirm="handleDelete(scope.row.id)"
          >
            <el-button type="danger" slot="reference">删除 <i class="el-icon-remove-outline"></i></el-button>
          </el-popconfirm>
        </template>
      </el-table-column>
    </el-table>
    <div style="padding: 10px 0">
      <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="pageNum"
          :page-sizes="[2, 5, 10, 20]"
          :page-size="pageSize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
      </el-pagination>
    </div>

    <!-- 新增弹窗 -->
    <el-dialog title="用户信息" :visible.sync="dialogFormVisible" width="30%">
      <el-form label-width="80px" size="small">
        <el-form-item label="用户名">
          <el-input v-model="form.username" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="密码">
          <el-input v-model="form.password" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="角色">
          <el-select clearable v-model="form.roleId" placeholder="请选择角色" style="width: 100%">
            <el-option v-for="item in roles" :key="item.name" :label="item.name" :value="item.id">
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="昵称">
          <el-input v-model="form.nickname" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="邮箱">
          <el-input v-model="form.email" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="电话">
          <el-input v-model="form.phone" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="地址">
          <el-input v-model="form.address" autocomplete="off"></el-input>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取 消</el-button>
        <el-button type="primary" @click="save">确 定</el-button>
      </div>
    </el-dialog>

    <!-- 老师点击课程出现的弹窗 -->
    <el-dialog title="老师授课信息" :visible.sync="teacherVis" width="40%">
      <el-table :data="teacherCourses" border stripe>
        <el-table-column prop="name" label="课程名称"></el-table-column>
        <el-table-column prop="score" label="学分"></el-table-column>
        <el-table-column prop="times" label="上课时间"></el-table-column>
      </el-table>
    </el-dialog>

    <!-- 学生点击课程出现的弹窗 -->
    <el-dialog title="学生选课信息" :visible.sync="studentVis" width="40%">
      <el-table :data="studentCourses" border stripe>
        <el-table-column prop="name" label="课程名称"></el-table-column>
        <el-table-column prop="score" label="学分"></el-table-column>
        <el-table-column prop="times" label="上课时间"></el-table-column>
      </el-table>
    </el-dialog>

  </div>

</template>

<script>
import Aside from "@/components/Aside";
import Header from "@/components/Header";
import {serverIp} from "../../public/config";

export default {
  name: "User",
  data() {
    return {
      serverIp: serverIp,
      tableData: [],
      form: {},
      total: 0,
      pageNum: 1,
      pageSize: 10,
      username: "",
      collapseBtnClass: 'el-icon-s-fold',
      isCollapse: false,
      sideWidth: 200,
      logoTextShow: true,
      headerBg: 'headerBg',
      email: "",
      address: "",
      dialogFormVisible: false,
      multipleSelection: [],
      roles: [],
      teacherCourses: [],
      studentCourses: [],
      teacherVis: false,
      studentVis: false,
    }
  },
  created() {
    // 请求分页查询数据
    this.load();
  },
  components: {
    Aside,
    Header
  },
  methods: {
    showStudentCourses(courses){
      this.studentCourses = courses;
      this.studentVis = true;
    },
    showTeacherCourses(courses){
      this.teacherCourses = courses;
      this.teacherVis = true;
    },
    handleExcelImportSuccess() {
      this.$message.success("导入成功");
      this.load();
    },
    handleExcelImportError() {
      this.$message.error("导入失败");
      this.load();
    },
    exp() {
      window.open(`http://${serverIp}:9090/user/export`);
    },
    delBatch() {
      let ids = this.multipleSelection.map(v => v.id);  //把一个对象数组变成一个id数组
      this.request.post("/user/del/batch", ids).then(res => {
        if (res.code === "200") {
          this.$message.success("批量删除成功");
        } else {
          this.$message.error("批量删除失败");
        }
        this.load();
      })
    },
    handleSelectChange(val) {
      console.log(val);
      this.multipleSelection = val;

    },
    handleDelete(id) {
      this.request.delete("/user/" + id).then(res => {
        if (res.code === "200") {
          this.$message.success("删除成功");
        } else {
          this.$message.error("删除失败");
        }
        this.load();
      })
    },
    handleEdit(row) {
      this.form = row;
      this.dialogFormVisible = true;
    },
    save() {
      this.request.post("/user", this.form).then(res => {
        if (res.code === "200") {
          this.$message.success("保存成功");
        } else {
          this.$message.error("保存失败");
        }
        this.dialogFormVisible = false;
        this.load();
      })
    },
    handleAdd() {   //点击新增按钮，执行此方法
      this.dialogFormVisible = true;
      this.form = {};
    },
    reset() {  //清空搜索框
      this.username = "";
      this.email = "";
      this.address = "";
      this.load();
    },
    load() {
      this.request.get("/user/page", {
        params: {
          pageNum: this.pageNum,
          pageSize: this.pageSize,
          username: this.username,
          email: this.email,
          address: this.address
        }
      }).then(res => {
        this.tableData = res.data.records;
        this.total = res.data.total;
      })

      this.request.get("/role").then(res => {
        this.roles = res.data
      })
    },
    handleSizeChange(pageSize) {
      console.log(pageSize);
      this.pageSize = pageSize;
      this.load();
    },
    handleCurrentChange(pageNum) {
      console.log(pageNum);
      this.pageNum = pageNum;
      this.load();
    }
  }
}
</script>

<style>
.headerBg {
  background: #eee !important;
}
</style>